Toyota 6AR-FSE, 8AR-FTS engines
Content
The Japanese 6AR-FSE and 8AR-FTS engines are practically twins in terms of technical parameters. The exception is the turbine, which is present on the engine with an index of 8. These are the latest Toyota units that are designed for advanced flagship models. Start of production of both power plants - 2014. An interesting difference is that the version without a turbine is assembled at the Chinese plant of Toyota Corporation, but the turbocharged engine is produced in Japan.
It is still difficult to say something specific about reliability, and not all experts can name the exact resource. Experience on these engines has not yet been accumulated, which means that not everything is known about malfunctions and hidden problems. Nevertheless, in the first years of operation, the units have proven themselves well.
Technical characteristics of the power plants 6AR-FSE and 8AR-FTS
In technical terms, the Japanese call these engines the best that can be created to use gasoline fuel. Indeed, with excellent power and torque figures, the units save fuel and provide flexible operation even at high loads.
The main features and characteristics of the installations are as follows:
| Working volume | 2 l |
| Cylinder block | aluminum |
| Block head | aluminum |
| Number of cylinders | 4 |
| Number of valves | 16 |
| Engine power | 150-165 HP (FSE); 231-245 hp (FTS) |
| Torque | 200 N*m (FSE); 350 N*m (FTS) |
| Turbocharging | only on FTS - Twin Scroll |
| Bore | 86 mm |
| Piston stroke | 86 mm |
| fuel type | gasoline 95, 98 |
| Fuel consumption: | |
| – urban cycle | 10 l / 100 km |
| - suburban cycle | 6 l / 100 km |
| Ignition system | D-4ST (Estec) |
The engines are based on the same block, have the same cylinder head, the same single-row timing chain. But the turbine greatly enlivens the 8AR-FTS engine. The engine has received incredible torque, which is available early and just blows the car from the start. Thanks to efficient fuel saving technologies, both engines show excellent performance and excellent fuel consumption.
The Euro-5 environmental class makes it possible to sell cars with these units until today, new generations of all target cars have received this installation.
What cars are these units installed on?
6AR-FSE is installed on the Toyota Camry in the XV50 generations and the current XV70. Also, this motor is used for the Lexus ES200.
8AR-FTS has a much broader scope:
- Toyota Crown 2015-2018.
- Toyota Carrier 2017.
- Toyota Highlander 2016.
- Lexus NX.
- Lexus RX.
- Lexus IS.
- LexusGS.
- Lexus R.C.
The main advantages and advantages of the AR range of engines
Toyota wrote down lightness, endurance, adequacy in consumption and reliability in the advantages of motors. Motorists also add the flexibility and superior power of the turbocharged unit.
A simple and understandable principle of operation of the internal combustion engine will not create problems in the future. The most complex system in a naturally aspirated version is VVT-iW, which is already well known to specialized services. Things are different with the turbine, it requires service, and it is not easy to repair it.
The new starter with planetary gear puts almost no load on the battery, and the 100A alternator easily restores losses. With attachments and electrical equipment, there should also be no problems.
The ICE manual allows you to pour several types of oil, but it is better to fill in the concern's original fluid before the end of the warranty period. The engine was quite sensitive to oil.
Disadvantages and problems of 6AR-FSE and 8AR-FTS from Toyota
Like all modern engines, these efficient installations have a number of special disadvantages that must not be forgotten to be mentioned in the review. Not all problems are visible in the reviews, since the engine runs are still small. But according to technological features and expert opinions, the following disadvantages of the units can be distinguished:
- Water pump. It's just a disease of modern Toyota engines. The pump has to be changed under warranty even before the first big MOT.
- Valve train chain. It should not stretch, but a single-row chain will require serious attention already by 100 km.
- Resource. It is believed that 8AR-FTS is capable of running 200 km, and 000AR-FSE - about 6 km. And that's all, major repairs to these engines are not allowed.
- Sounds on cold start. When warmed up, a ringing or slight knocking is heard. This is a design feature of the units.
- Expensive service. In the recommendations you will find only original components for maintenance, which will turn out to be an expensive pleasure.
The biggest drawback is the resource. After 200 km, it makes no sense to carry out repairs and expensive service for a unit with a turbine, you will need to look for a replacement for it. This is a difficult task, since contract motors may not be available, given their poor resource. The non-turbocharged engine dies a little later, but this mileage is not enough for active operation.
How to tune AR engines?
In the case of a turbocharged engine, there is no chance of increasing power. Toyota has pushed the potential of the 2-litre engine to its full potential. Various offices offer chip tuning with an increase of 30-40 horses, but all these results will remain on reports and pieces of paper, in reality there will be no difference.
In the case of the FSE, you can supply a turbine from the same FTS. But it will be cheaper and easier to sell a car and buy another with a turbo engine.
An important detail that will sooner or later become a necessity for the owners of this unit is the EGR. This valve has to be cleaned constantly, since the specifics of Russian operation are not suitable for it. It is better to turn it off at a good station and facilitate the operation of the unit.
Conclusion about the power plants 6AR and 8AR
These motors look great in the Toyota model line. Today they have become an adornment of the lineup of flagship cars, they have received worthy characteristics. But environmental standards continue to put pressure, and this was confirmed by the terrible EGR valve, which spoils the lives of owners of cars with these units.
Also not happy with the resource. If you buy a used car with such an engine, make sure the mileage is original and the service quality is good. Motors are not suitable for tuning, they already give out very good performance.
